S Corp Tax Savings Calculator
Compare sole proprietor SE tax against S corp payroll tax on your salary and distribution split, net of accounting costs.
Built by Toolsque Team · last updated September 15, 2026 · checked against our testing process
Your business
The comparison
Distributions ($55,000) escape the 15.3% payroll tax; only salary pays it. The salary must survive an IRS reasonable compensation test: too low is the classic audit trigger. Estimate only, confirm with a CPA.
How to use the S corp savings calculator
- Enter net profit: business income after expenses, before paying yourself.
- Set a reasonable salary: what you would pay someone to do your job. This is an IRS requirement, not a dial to zero.
- Count the real S corp overhead: payroll service ($500 to $1,000), a separate Form 1120-S return ($800 to $1,500), and state franchise fees.
- Judge the net line: under roughly $1,500 per year of net saving, the extra paperwork may not be worthwhile.
How the S corp election saves payroll tax
A sole proprietor pays 15.3% self-employment tax on essentially all profit. An S corp owner splits profit into salary (payroll-taxed) and distributions (not). On $120k profit with a $65k salary, roughly $55k of distributions escapes the 15.3%: about $7,800 gross, $5,800 net of the added accounting. The election's entire value lives in that split, and this calculator prices it with your numbers.
"Reasonable salary" is the whole ballgame
The IRS requires salary matching what your role commands on the market: a $120k consultant paying themselves $20k is the textbook audit profile, and reclassification comes with back taxes and penalties. Defensible anchors: industry salary surveys, what you would pay a replacement, 40% to 60% of profit as a sanity band. When in doubt, higher salary equals lower saving but bulletproof compliance.
When it's not worth it
Below roughly $60,000 to $80,000 of consistent profit, admin costs eat the arithmetic. Also weigh: payroll obligations every single month, reduced QBI deduction interplay, state franchise taxes (California's 1.5% S corp tax changes the math), and lower Social Security credits from a lower salary. This is a planning estimate: the decision deserves a CPA hour.
Why the wage base bends the savings curve
The 12.4% Social Security portion of SE tax stops at the wage base this calculator uses ($184,500 for 2026). Above it, both a sole proprietor and an S corp owner pay only the 2.9% Medicare piece on the marginal dollar. That means the S corp advantage is proportionally largest in the $80,000 to $184,500 profit band, where splitting off distributions dodges the full 12.4%. Push profit and salary well past the wage base and the marginal saving on additional distributions shrinks to just the 2.9% Medicare rate, plus the 0.9% Additional Medicare Tax on wages over $200k single / $250k MFJ, which S corp salary does not escape either. Run the numbers again after a big revenue year: the percentage saved on profit above the cap is smaller than it was on the first $184,500.
The QBI deduction quietly claws some of it back
Section 199A gives pass-through owners a 20% deduction on qualified business income (QBI), but salary paid to yourself is not QBI, it is W-2 wages, and it reduces the QBI base dollar for dollar. On the $120k profit / $65k salary example used above, QBI drops from $120k (sole prop) to roughly $55k (S corp profit net of salary), cutting the 20% deduction from about $24k to $11k, a swing of roughly $13k in deduction that is worth several thousand dollars in income tax depending on your bracket. This is a real offset against the payroll-tax saving, not a footnote, and it is part of why maximizing salary to "play it safe" on reasonable-comp costs more than the payroll math alone suggests.
Two shareholder costs the split doesn't show
Health insurance: a more-than-2% S corp shareholder's premiums are only deductible if they run through payroll and get added to W-2 Box 1 wages. Pay them straight from the business without that step and the deduction is gone. Retirement contributions: solo 401(k) and SEP limits are calculated off W-2 salary, not total profit or distributions. Set salary too low to squeeze the payroll-tax saving and you also shrink the 25%-of-compensation employer contribution room: a $30k salary caps employer 401(k) contributions near $7,500, while a $65k salary opens it to about $16,250. Chasing the smallest defensible salary can cost more in lost retirement space than it saves in SE tax.
Making the election: Form 2553 and the deadlines
Everything above assumes you have already made the S corp election, but the calculator will not do that part for you, and the timing rules trip people up more than the tax math does.
You elect S corp status by filing Form 2553 with the IRS. There are two deadline paths depending on when you are electing. A brand new entity gets 75 days from formation to file and have the election apply to its first tax year. An existing LLC or corporation that wants to switch for the current calendar year has to file by March 15 of that year, not December 31 like a lot of people assume, since the election has to be in before more than two and a half months of the tax year have passed.
Miss either deadline and the election just does not apply to that year, which stings if you had already budgeted for the payroll-tax saving. There is a fix for genuinely missed deadlines though: late election relief under Revenue Procedure 2013-30 lets you request the election apply retroactively, as long as you can show reasonable cause for missing it and you have otherwise been acting like an S corp (paying yourself a salary, filing accordingly). It is not automatic, and a CPA filing it correctly the first time beats fixing a rejected one, but it exists and it saves a real number of businesses every year who find out about the deadline a little too late.
Related tools
Start from your true tax picture in the 1099 tax calculator, deduct the home office first with the home office deduction calculator, and check what you should be paying yourself via the billable hours calculator.
Standards and references
S Corp tax savings math compares self-employment tax (15.3% on 92.35% of net earnings per IRS Schedule SE) to the split between reasonable W-2 salary (subject to FICA) and distributions (not subject to SE tax). Reasonable-compensation guidance follows IRS Fact Sheet 2008-25. The Section 199A QBI deduction rules come from Internal Revenue Code Section 199A and the Treasury Regulations at 1.199A-1 through 1.199A-6.
Confirm reasonable compensation and state entity taxes with a CPA before electing S corp status. These figures are an estimate to help you plan, not tax, legal or financial advice. The rules differ by state and by country and they change, so check your own situation with a qualified accountant or adviser before you commit to anything.
Frequently Asked Questions
How much does an S corp save in taxes?
An S corp saves roughly 15.3% in payroll and self-employment taxes on the portion of net profit distributed as shareholder dividends rather than paid as W-2 salary, minus $1,500 to $3,000 in administrative and accounting overhead. On $120,000 of profit with a $65,000 salary, net savings typically range from $5,000 to $6,000 annually.
What is considered a reasonable S corp salary?
A reasonable salary is the fair market wage you would have to pay a third party to perform your exact job duties. The IRS evaluates reasonable compensation using industry salary surveys, geographical averages, qualifications, time spent, and comparable business metrics under IRS Fact Sheet 2008-25.
At what income level does an S corp election make sense?
An S corp election typically becomes advantageous when your business generates at least $60,000 to $80,000 in consistent net profit. Below this threshold, required expenses such as payroll software, unemployment taxes, separate corporate tax return preparation (Form 1120-S), and state franchise fees often cancel out the tax savings.
Does electing S corp status reduce your income taxes?
No. An S corporation is a pass-through entity where profits pass directly to your personal Form 1040. The tax reduction comes solely from self-employment and FICA payroll tax savings on distributions, partially adjusted by Section 199A QBI deduction rules.
What are the deadlines to elect S corp status with Form 2553?
For an existing LLC or C corp operating on a calendar year, Form 2553 must be filed no later than March 15 of the tax year the election is to take effect (within 2 months and 15 days of year start). Newly formed entities must file within 75 days of formation. If a deadline is missed, relief may be requested under IRS Revenue Procedure 2013-30.